I think the older car has an unjustified bad rep, choose carefully and you've got a classy, luxury car. Just make sure all the electrics work, central locking, windows, sunroof if fitted and aircon blows cold and heater blows hot. Look for uneven tyre wear which could point to suspension issues. Good luck with the viewing.
Rust on sills, front wings and bonnet. Make sure everything works as it should, just like any other car really. Don't be too concerned if it's got satnav as its rubbish in the early cars and is non updatable. Make sure gearbox goes up and down smoothly with no "lurch" Let us know what price and spec it's got for more accurate advice. Also, ask yourself this, does it really need to be a 4.0?? The 3.0 is a bit better on fuel and still makes all the right noises!!